database-vendor-name

Specifies the name of the database vendor for which tables can be created.
Allowed values are javadb, db2, mssql, mysql, oracle, postgresql, pointbase, derby (also for
CloudScape), and sybase, case-insensitive.

If no value is specified, a connection is made to the resource specified
by the jndi-name subelement of the cmp-resource element, and the database vendor name is
read. If the connection cannot be established, or if the value is not
recognized, SQL-92 compliance is presumed.